Large bore vacuum adapter



FIG. 1 is a front perspective view of a large bore vacuum adapter showing our new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is a rear perspective view thereof. 

CLAIM An ornamental design for a large bore vacuum adapter, as shown and described. 